第三个定义对象的大小,即椭球半径。
The third defines how big the object is, it is the radius of an ellipsoid.
对有效地球半径的推导方法和应用进行了讨论。
Application of effective earth radius and methods to derive it are discussed.
动态改变大地水准面差距与地球半径的比值,改善了地球形状的三维表达效果;
Dynamic changing the scale of geoid undulations and the radius of the earth, the video mode of the earth figure is improved.
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